After two years of defeats and reverses, 1778 had been a year of success for George Washington and the Continental Army. France had entered the war as the ally of the United States, the British had evacuated Philadelphia, and the redcoats had been fought to a standstill at the Battle of Monmouth. While the combined French-American effort to capture Newport was unsuccessful, it lead to intelligence from British-held New York that indicated a massive troop movement wasrnimminent. British officers were selling their horses and laying in supplies for their men. Scores of empty naval transports were arriving in the city. British commissioners from London were offering peace, granting a redress of everyrngrievance expressed in 1775. Spies repeatedly reported conversations of officers talking of leaving. To George Washington, and many others, it appeared the British would evacuate New York City, and the Revolutionary War might be nearing a successful conclusion. Then, on September 23, 1778, six thousand British troops erupted into neighboring Bergen County, New Jersey, followed the next day by threernthousand others surging northward into Westchester County, New York. Washington now faced a British Army stronger than Burgoyne’s at Saratoga the previous year.rnWhat, in the face of all intelligence to the contrary, had changed with the British?rnrnThrough period letters, reports, newspapers, journals, pension applications, and other manuscripts from archives in the United States, Canada, United Kingdom, andrnGermany, the complete picture of Britain’s last great push around New York City can now be told. The strategic situation of Britain’s tenuous hold in America is intermixed with the tactical views of the soldiers in the field and the localrninhabitants, who only saw events through their narrow vantage points. This is the first publication to properly narrate the events of this period as one campaign. Grand Forage 1778: The Battleground Around New York City by historian Todd W. Braisted explores the battles, skirmishes, and maneuvers that left George Washington and Sir Henry Clinton playing a deadly game of chess in the lower Hudson Valley as a prelude to the British invasion of the Southern colonies.